In vitro maturation of human oocytes maintaining good development potential for rescue intracytoplasmic sperm injection with fresh sperm

Table 1 Comparison of the characteristics of the patients (female)

Variables	Old sperm group (n = 15)	Fresh sperm group (n = 13)	P value
Age (yr)	29.5 ± 2.1	30.6 ± 2.3	0.175
Infertility duration (yr)	3.4 ± 1.9	3.1 ± 2.0	0.546
Average Gn days	9.9 ± 3.2	11.1 ± 1.5	0.324
Average Gn consumption (IU)	2591.2 ± 1453.7	2076.6 ± 1267.3	0.532
BMI	21.2 ± 2.4	21.6 ± 2.7	0.301
Average oocyte number	12.1 ± 4.7	13.5 ± 4.9	0.326

Gn: Gonadotropin; BMI: Body mass index.